Inson



M. HUTCHINSUN.

ASH smn.

APPLICATION FILED JAN-2 I919- Patented July 5, 1921.

(letters and figures MACKINTOSH KUTCHINSON, OF TORONTO, ONTARIO, CANADA,

ASH-SIFTER.

Specification of Letters Patent.

Patented July 5, 1921.

Application filed hnuary '2, 1919. Serial No. 269,299.

To all whom it may concern Be it known that I, MAGKINTOSK Heronn soN, a subject of the King of (irreetlirits ain, residing at Toronto; in the Province of' Ontario and Dominion of Canada, have invented certain new and useful Improvements in Ash-Siftersz and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to make and use the same reference being had to the accompanying drawings, and to the of reference marked thereon, which form a part of this specificittion.

My invention relates to ash sifters although it may be used for sifting or screening other materials. i

It has for its object to provide a base for the sifter or screen which may be fitted to receptacles or cons of stock or standard size designed to receive the finer screenings or particlcs and which will support the screen or Sifter in in. stable manner and permit its easy rotation and practically prevent the escape of fine dust during the operation of screening.

To the accomplishment of the foregoing and such other objects ,ns may hereinafter zip'pear, thc invention consists in the features hereinafter described and then sought to'be clearly dcfiucd by the claims, reference being had to the nccompnnying drawing forminga, part hereof, and in which- Figure l is :1 pln-n view of the screen hnse;

Fig. 2 is a vertical section through it screen, its bnse and tho rccrptn'cle or case receiving the finer ifted pnrticl'cs or screen in s;

Fi 3 is a detail sectional view of, n modi- 'fied orm of base. showing its relation to tho screen and to the receiving can.

In the drawing the numeral l desigmites u demountnble rim of any suitable form and material provided at its inner c rcumfercn c with dinicnding lips 2 adapted to lit within the upper end of n can or receptacle 3 de signed to r ceie the siftingrs or scrccn'ng's separated from the larger particles of mtcrinl by the scrrcn l and its conlnincr 5. The rim 1 is snrinonntwl by zt ring or :mnulns 6 of any desircd material and suitably secured to the demonntnble rim nnd which cerries at number of rollers 7 set within rocfesses 8 formed at the inner circumfcrmwc nl the ring and jeurnztlcd on bolts or screws which it :tppcrtnins to S). "The belts or screws an annular ring flange 10 which serves to brace the rollers and to serve as washers for the some; and inthe preferred form, illustrated in Figs. 1 and 2, extends upwardly and srrres'ns n dust guard tending to pie vent the escape of dust between the receiving receptacle 3 and screen container 5 as 9 also hold in place n ell as a guide for the container 5 in re-- volvmg the same over the rollers 7. To effeet a. close joint between the rihg flange 1!) and the inner face of the annulus 6 so that there will he no open. spaces at such ]llIl('t10fl, the ring flange 10 may he further secured or fastened by s-crews er pins 11. 1 he eontnmer 5 for the material to he sifted or screened has at its lower edge an in turned upwardly extending: flange 12 between which and the wall of the container the edge of the screen 4 is secured, the upper mrtion of tlr flange being turned inwnm ly to form it lip 13 which constitutes a seat for the screen as illustrated in 2-, said lip resting on the top edge of the guard and guide flange l0. and the lower folded edge of the container resting: on the rollers T of the demountahle rini. Under the con strnction described, the dcmountnble rim is readily fitted to cans or receptacles of stock or stnndli'rd size and held by the lips 2 against sliding movcrncnt thereon; the contnmcr 5 is easily rcroluhle on the rollers 7; the dustgun'rd and guide flange will tend to prevent the escnpc of dust and at the same time scrvc as a guide for the container and also hold thirollers within the recesses formed for them: and the rim can he dcmonntcd and rcplnced on other receptacle as occasion may require. The rim with its annulus or ring and the rollers and dust and guide flange constitute n unitnry structure which is light nnd st rung nnd scpzunhh' from the scrrcn container Jilitl receiving rcrrptnclc and ndzipted, for use with different containers and rcccpinclcH unit fllYtH stability in tincontnincr nod ruccplnclc.

instead of having the {hing ll) cxtcnd above the annulus or ring (I as in Ihe fll'v l'crrcd construction it may term natiiii-lonthe top of the ring as illnstrn 'rd at In in Pig. it of tho drawing. and in such modified form the rollers may lie hclow thitop hi e of tho nnnulns or in; (i and; projcci partinlly into :1 rnhlwt H in the ring". us shown in Fig. and in such form tin; lower "d n? readily the so me or i of 1 the screen n container provided with a sieve, the lower wall of the container extending below the container may be beaded and will bear 'against a shoulder of the annulus or ring, as indicated in Fig. 3, so as to be held in place in its rotation. The demopnteble rim, however, together with its annulus or ring, and the rollers, and flange for holdin the rollers in their recesses, in this mod1- fie lform, are, in the lements specified and their functions substentiall the same as in the Hgreierred form of the evwe.

ving described my invention and set forth its merits, what I claim 8:

1. A sifter comprising a dcmountable rlm adapted to rest upon a, rcee tucle, rollers and bearings therefor atteohe to said film an sieve to constitute a flange to rest upon the peripher of the rollers of the demountable rim, sai container and its sieve being so areble and removable from the demounta le rim without removal of the rim and its roll.- ers from the receptacle.

2. A sifter comprising a. demouutable rim adapted to rest upon a receptacle, rollers su ported upon the rim, a eontamerprovi ed with a. sieve, container extending below the sieve to conthe lower wall of the r stitute a, downwardly extending flange to rest upon the periphery of the rollers of the demountable rim, and a, flange connected with the demountuble rim and extending above the periphery of the rollers and lying inside of the depending flange of the container to form a. dust guard inside of the depending flange of the container and a.

guide for the container.

3. In a s,ifter comprising a container prouided with a, screen, and a receptacle to receive the screenings; a demountable rim to rest upon the receptacle and provided with an annulus or ri formed with roller recesses, rollers journa ed in the recesses, a

inpresenoe o twowitnesses.

MAOKINTOSH HUTGHINSON.

Witneseesw Hum Von),

Orro Bmorn.

In testimon whereof I allix my signature 7 

